User Agent Firefox

User Agent

By: SandVPN
Change your user agent QUICKLY and EASILY! Our extension includes SEVERAL ADVANCED methods of user-agent spoofing! To test its efficiency: https://webbrowsertools.com/useragent/

Features & Capabilities

The User Agent Chrome extension allows seamless switching of your browser's user agent string. It provides several advanced methods for user-agent spoofing, letting you test how websites detect or respond to different browsers and devices. With this tool, users can quickly and easily change their browser's identity for testing or privacy purposes. The extension is designed for efficiency and versatility, helping developers, testers, and privacy-conscious users verify browser compatibility or mask their browsing fingerprint. Test your browser's spoofing effectiveness with the included link: https://webbrowsertools.com/useragent/

User Growth & Download Statistics

By:
SandVPN
Daily users:
279 -4
Rating:
3.29
(7)
Version:
1.3 Last updated: 2022-09-10
Version code:
5456551
Creation date:
2022-09-09
Risk:
High risk impact Low risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
450.96KB
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-16
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
SandVPN
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/user-agent/

User Reviews

Terrible UI for User-Agent selection. It's either "Random" or "Random, but for a specific platform". Largely defeats the point of being able to select a different UA.
by Re*****, 2026-05-21

Does Not Work. Firefox 115 ESR - cannot change User Agent to any other version - no interface or controls. Un-installed it.
by Se*****, 2026-04-28

hi to dev i will be on this place for im a very big fan so i very much will say to dev and let him know that just how much believe in such a very good amazing dev work i believe in you and this plugin/addon i really wish to see it grow and level up with as much in total users it can or may get which is a goal/dream of any dev to gain big users on their app/software it can if you are willing to im sure all it need is to be spreeded on all kinds of browsers kinda making it innevitable and there is only 2 kinds that can handle an addon/extention which is firefox/gecko bases and you/i all know there is up to hundreds literally hundreds to pick from same with chromium browsers a revolution google chrome started and it possibly has even up to as much as thousands yes much much more than witth firefox it is still much more popular than firefox gecko plug in engine as popular as the firefox is chrome inspired a bit more different variants of chromium style kinds of browsers if in chromium web-store it will get far so far in life and if there is a custom mode this is how it must be if you wanna make it as good as it can possbly get all 3 modes has to be on 1 straight with custom in the middle of the 2 current settings and when you use custom the my user agent part should be blank and let you fill in a user agent from google or what ever you want from where of what ever device and browser you wanna make your browser be known as and it must have a whitelist in which only a few sites you want will be known by a specific user agent
by Fi*****, 2025-08-01
View all user reviews ›

Is User Agent Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

User Agent requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

User Agent has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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